Concept Study

  1. Circular Motion and Centripetal Force The Challenge: Many students struggle with how objects move in circles and why they don’t fly off in a straight line. Simple Explanation: When an object moves in a circle, it needs a force pulling it toward the center (centripetal force). If this force disappears, the object will move in a straight line (Newton’s First Law). Example: Think of a ball on a string. If you spin it and then let go, it moves in a straight line instead of continuing in a circle. The tension in the string was the centripetal force keeping it in circular motion. Become an Education Franchise Partner with LTSchool. Formula: F=mv2rF = \frac{mv^2}{r} Where: FF = Centripetal force mm = Mass vv = Velocity rr = Radius of the circle 2. Electromagnetic Induction (Faraday’s and Lenz’s Laws) The Challenge: Understanding how changing magnetic fields create electricity. Simple Explanation: Moving a wire through a magnetic field or changing the magnetic field strength can gen...

1. Advanced Multiplication Tricks Multiplying by 99 Multiply by 100 and subtract the original number. Example: 36 × 99 = (36 × 100) - 36 = 3600 - 36 = 3564 A Simple Guide to GCSE Chemistry Equations . Multiplying Two Numbers Close to 100 Use the formula: (a−x)×(b−x)+x2(a - x) \times (b - x) + x^2 Example: 97 × 96 Difference from 100: (100 - 97 = 3), (100 - 96 = 4) Multiply: 3 × 4 = 12 Subtract from 100: (97 - 4 = 93) Answer: 9312 Multiplying Any Number by 12 Double the number, then add the original number shifted one place to the left. Example: 46 × 12 46 × 2 = 92 Shift 46 left: 460 Add: 460 + 92 = 552 2. Quick Division Shortcuts Dividing by 5 Multiply by 2 and move the decimal one place left. Example: 135 ÷ 5 135 × 2 = 270 Move decimal: 27.0 or 27 Read a guide for GCSE Biology 2025 . Dividing by 25 Multiply by 4 and move the decimal two places left. Example: 300 ÷ 25 300 × 4 = 1200 Move decimal: 12 Dividing by 9 Trick Sum the digits until you get a single-digit number. Examp...